CN206103397U - Adipic acid purification crystallization device - Google Patents
Adipic acid purification crystallization device Download PDFInfo
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- CN206103397U CN206103397U CN201621083178.8U CN201621083178U CN206103397U CN 206103397 U CN206103397 U CN 206103397U CN 201621083178 U CN201621083178 U CN 201621083178U CN 206103397 U CN206103397 U CN 206103397U
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- crystallizer
- crystal seed
- adipic acid
- crystallization
- blender
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Abstract
The utility model relates to an adipic acid purification crystallization device, including crystal seed blender, primary crystallization ware, surface cooler and mixed cooling ware crystallizer in advance, the stainless steel baffle, siphon and vacuum apparatus, three stainless steel baffle set up in crystallizer in advance the inferior officer in advance the crystallizer divide into three independent crystallization chamber, it is used for the transported substance material to be equipped with the siphon between two adjacent crystallization chamber, the feed pipeline of crystallizer links to each other with the crystal seed blender through connecting the pipeline in advance, the ejection of compact pipeline of crystallizer links to each other with import of primary crystallization ware and the import of crystal seed backwash pump respectively through connecting the pipeline in advance, the crystal seed backwash pump links to each other with the crystal seed blender through connecting the pipeline, the outlet line of crystal seed blender and in advance the 2nd crystallization chamber of crystallizer link to each other, through this technical scheme, make the adipic acid product purity of the crystal that produces reach level, the epigranular has improved the cycle of operation of adipic acid crystallization loading and unloading capacity and equipment, effectual manufacturing cost and the equipment maintenance cost of having reduced greatly.
Description
Technical field
This utility model is related to a kind of equipment for purifying of chemical products, more particularly to a kind of adipic acid purifying crystal dress
Put.
Background technology
In the prior art, adipic acid purifying crystal device is the key component in adipic acid production, is substantially adopted at present
Horizontal continuous crystallization device is used, the device is divided into 12 independent crystallisation chambers, each crystallisation chamber is provided with independent surface cooler, by
Steam jet ejector, condenser, vacuum pump provide vacuum system, the principle evaporated using vacuum insulation, the crystallization of material continuous cooling
Separate out；Commercial production adipic acid has the succinic acid of a small amount of easy crystallization, 1,3-propanedicarboxylic acid and a large amount of in crystallization process, in material
Nitric acid, part nucleus sticked on the wall of crystallizer four, forms larger scar block, affects crystallizer cycle of operation；While fourth two
Acid and 1,3-propanedicarboxylic acid form many impurity nucleus in temperature-fall period, and progressively grow up, and are coated by adipic acid, form heteroacid crystal grain,
And the crystallization particle diameter inequality for being formed, it is difficult to separate in rear operation, reduce the purity of adipic acid product and the uniformity of particle diameter.
To solve the problems, such as crystallizer cycle and production capacity, Authorization Notice No. is the utility model patent of CN202289546U
" Adipic acid crystallization device " is disclosed, it is made up of material inlet, pre-crystallizer, primary crystallization device and vacuum condensing system, described
Primary crystallization device be 12 crystallisation chambers composition, pre-crystallizer is single chamber composition, and material flows through successively pre-crystallizer and primary crystallization
12 crystallisation chambers of device, vacuum system is provided by steam jet ejector, condenser and vacuum pump, and above-mentioned patent extends the fortune of crystallizer
Line period, improves to a certain extent production capacity, but under high produce load, the crystallization that adipic acid temperature of charge declines
Cheng Zhong, nucleus occurs in a large number, and the purity and granularity of product crystallization are difficult to control, the quality of final impact product, it is impossible to obtain
Obtain high-purity and high-quality adipic acid product.
Utility model content
In view of this, main purpose of the present utility model is to provide a kind of adipic acid purifying crystal device, by this skill
Art scheme, it is not good with the adipic acid product crystal purity and granularity that solve the problems, such as prior art presence, while further improving
Crystallization of adipic acid production capacity and cycle of operation.
In order to achieve the above object, the technical solution of the utility model is realized in：A kind of adipic acid purifying crystal
Device, including crystal seed blender, primary crystallization device, surface cooler and hybrid cooler, are provided with 12 crystallisation chambers in primary crystallization device,
Including pre-crystallizer, stainless steel separator, siphon and vacuum equipment, three stainless steel separators are arranged on pre-crystallizer inside by advance
Crystallizer is divided into three independent crystallisation chambers, and siphon is provided between two adjacent crystallisation chambers for conveying material, pre-crystallized
The feeding line Jing connecting pipelines of device are connected with crystal seed blender, the discharging pipeline of pre-crystallizer by connecting pipeline respectively with master
Crystallizer import is connected with crystal seed backflow pump inlet, and crystal seed reflux pump Jing connecting pipelines are connected with crystal seed blender；Crystal seed mixes
The outlet line of device is connected with the second crystallisation chamber of pre-crystallizer, pre-crystallizer gaseous phase outlet pipe and primary crystallization device the first eight crystallization
The gaseous phase outlet difference Jing connecting pipelines of room are connected with the gas phase entrance of surface cooler, the gaseous phase outlet and hybrid cooler of surface cooler
The connection of gas phase entrance, the gaseous phase outlet of rear four crystallisation chambers of primary crystallization device is connected to hybrid cooler by steam jet ejector
Gas phase entrance, the gaseous phase outlet Jing connecting pipelines of hybrid cooler are connected with vacuum equipment.
The pre-crystallizer be horizontal type structure, three independent crystallisation chamber longitudinal arrangements, each crystallization interior is respectively provided with
There is eccentric agitator, eccentric agitator is near siphon side.
Agitator is provided with the crystal seed blender.
The vacuum equipment is made up of steam jet ejector, heat exchanger, vacuum pump, bosh and cooling water pump.
It is using the beneficial effect after above-mentioned technical proposal：A kind of adipic acid purifying crystal device, by the technical program,
Make the adipic acid product crystal purity produced reach compared with level, epigranular, substantially increase crystallization of adipic acid production energy
The cycle of operation of force-summing device, effectively reduces production cost and equipment maintenance cost.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
In figure, 1 crystal seed blender, 2 primary crystallization devices, 3 surface coolers, 4 hybrid coolers, 5 pre-crystallizers, 6 stainless steel separators,
7 siphons, 8 connecting pipelines, 9 crystal seed reflux pumps, 10 steam jet ejectors, 11 agitators, 12 heat exchangers, 13 vacuum pumps, 14 coolings
Tank, 15 cooling water pumps, 16 crystallisation chambers.
Specific embodiment
Specific embodiment in this utility model is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, the adipic acid purifying crystal device that this utility model is related to, including crystal seed blender 1, primary crystallization device
2nd, surface cooler 3 and hybrid cooler 4, are provided with 12 crystallisation chambers in primary crystallization device 2, also including pre-crystallizer 5, rustless steel every
Plate 6, siphon 7 and vacuum equipment, three stainless steel separators 6 are arranged on inside pre-crystallizer 5 and will be divided into three in pre-crystallizer 5
Independent crystallisation chamber 16, is provided with siphon 7 for conveying material, the charging of pre-crystallizer 5 between two adjacent crystallisation chambers 16
Pipeline Jing connecting pipelines 8 are connected with crystal seed blender 1, the discharging pipeline of pre-crystallizer 5 by connecting pipeline 8 respectively with primary crystallization
The import of device 2 is connected with the import of crystal seed reflux pump 9, and the Jing connecting pipelines 8 of crystal seed reflux pump 9 are connected with crystal seed blender 1；Crystal seed mixes
The outlet line of device 1 is connected with the second crystallisation chamber 16 of pre-crystallizer 5, the gaseous phase outlet pipe of pre-crystallizer 5 and primary crystallization device 2 the first eight
The gaseous phase outlet difference Jing connecting pipelines 8 of individual crystallisation chamber 16 are connected with the gas phase entrance of surface cooler 3, the gaseous phase outlet of surface cooler 3
It is connected with the gas phase entrance of hybrid cooler 4, the gaseous phase outlet of rear four crystallisation chambers 16 of primary crystallization device 2 passes through steam jet ejector
The 10 gas phase entrances for being connected to hybrid cooler 4, the gaseous phase outlet Jing connecting pipelines 8 of hybrid cooler 4 are connected with vacuum equipment.
The pre-crystallizer 5 is horizontal type structure, and three independent longitudinal arrangements of crystallisation chamber 16, each crystallisation chamber 16 is interior respectively
Agitator 11 is provided with, agitator 11 is near the side of siphon 7.
Agitator 11 is provided with the crystal seed blender 1.
The vacuum equipment is by steam jet ejector 10, heat exchanger 12, vacuum pump 13, bosh 14 and the structure of cooling water pump 15
Into.
In embodiment of the present utility model, the gas phase pipe and vacuum holding of each crystallisation chamber 16 of pre-crystallizer 5 and primary crystallization device 2
Put corresponding surface cooler 3 and hybrid cooler 4 connects, the gas phase of hybrid cooler 4 takes out negative by steam jet ejector 10 and vacuum pump 13
Pressure, the cooling medium of hybrid cooler 4 provides closed circuit recuperated cycle by water storage device, heat exchanger 12 and pump.
In production, most of the first crystallisation chamber 16 through pre-crystallizer 5 flow to successively the to this utility model in raw material
Three crystallisation chambers 16, are then divided into two parts by the 3rd crystallisation chamber 16, are partly into primary crystallization device 2, and in addition fraction is used as crystalline substance
Plant and enter crystal seed blender 1；A part of material is directly entered the 3rd crystallisation chamber of crystal seed blender 1 and pre-crystallizer 5 in raw material
16 materials for returning are mixed, and enter directly into the second crystallisation chamber 16 of pre-crystallizer 5, and crystal seed blender 1 is single cell structure,
Agitator 11 is provided with, a part for the discharging of pre-crystallizer 5, containing a small amount of crystallization of adipic acid body, is sent into by crystal seed reflux pump 9
Mix with a part of feed product in crystal seed blender 1, be uniformly mixed by agitator 11, to reach the temperature of demand
With nucleus concentration, then entered into by bottom nucleus growth is carried out in the second crystallisation chamber 16 of pre-crystallizer 5, pre-crystallizer 5 and main
The gas phase surface cooler 3 corresponding with vacuum equipment of each crystallisation chamber 16 of crystallizer 2 and hybrid cooler 4 connect, hybrid cooler 4
Gas phase takes out negative pressure by steam jet ejector 10 and vacuum pump 13, the cooling medium of hybrid cooler 4 by water storage device, heat exchanger 12 with
And pump provides closed circuit recuperated cycle.
To be divided in pre-crystallizer 5 in embodiment of the present utility model in three crystallisation chambers 16, crystallisation chamber 16 by rustless steel
It is furnished with agitator 11 in the independent isolating of dividing plate 6, each crystallisation chamber 16, the gas phase of each crystallisation chamber 16 distinguishes Jing surface coolers 3 and enters vacuum holding
Put, and the second crystallisation chamber 16 is connected with crystal seed blender 1, crystal seed blender 1 is provided with agitator 11, discharges in the 3rd crystallisation chamber 16
Partial material and the directly mixing in the crystal seed blender 1 of a part of raw material, into the second crystallisation chamber 16 of pre-crystallizer 5, be
The material that first crystallisation chamber 16 comes provides crystallization nucleus, and at high temperature crystallization of adipic acid is effectively controlled, it is to avoid spontaneous product
The excessive nucleus of life, so as to reduce grain size number, while former higher than adipic acid according to the dissolubility under succinic acid and 1,3-propanedicarboxylic acid high temperature
Reason, can avoid succinic acid and 1,3-propanedicarboxylic acid that crystallization is produced in temperature-fall period, improve the purity of adipic acid crystals；And there is crystalline substance
In the crystallization process that core is participated in, material can be prevented effectively from and produce the phenomenon that crystallization is separated out in equipment surface, so as to significantly prolong
The cycle of operation of long crystallizer.
The above, preferable possible embodiments only of the present utility model are not limited to of the present utility model
Scope.
Claims (4)
1. a kind of adipic acid purifying crystal device, including crystal seed blender, primary crystallization device, surface cooler and hybrid cooler, main knot
12 crystallisation chambers are provided with brilliant device, it is characterised in that also including pre-crystallizer, stainless steel separator, siphon and vacuum holding
Put, three stainless steel separators are arranged on inside pre-crystallizer and for pre-crystallizer to be divided into three independent crystallisation chambers, adjacent at two
Siphon is provided between crystallisation chamber for conveying material, feeding line Jing connecting pipelines and the crystal seed blender phase of pre-crystallizer
Even, the discharging pipeline of pre-crystallizer is connected respectively by connecting pipeline with the import of primary crystallization device and crystal seed backflow pump inlet, crystal seed
Reflux pump Jing connecting pipelines are connected with crystal seed blender；Second crystallisation chamber phase of the outlet line of crystal seed blender and pre-crystallizer
Even, the gaseous phase outlet difference Jing connecting pipelines and surface cooler of pre-crystallizer gaseous phase outlet pipe and primary crystallization device the first eight crystallisation chamber
Gas phase entrance connects, and the gaseous phase outlet of surface cooler is connected with the gas phase entrance of hybrid cooler, rear four crystallizations of primary crystallization device
The gaseous phase outlet of room is connected to the gas phase entrance of hybrid cooler by steam jet ejector, and the gaseous phase outlet Jing of hybrid cooler connects
Adapter line is connected with vacuum equipment.
2. adipic acid purifying crystal device according to claim 1, it is characterised in that the pre-crystallizer is horizontal knot
Structure, three independent crystallisation chamber longitudinal arrangements, each crystallization interior is respectively arranged with agitator, and agitator is near siphon one
Side.
3. adipic acid purifying crystal device according to claim 1, it is characterised in that be provided with the crystal seed blender
Agitator.
4. adipic acid purifying crystal device according to claim 1, it is characterised in that the vacuum equipment is sprayed by steam
Device, heat exchanger, ejector pump, vacuum pump, bosh and cooling water pump are constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083178.8U CN206103397U (en) | 2016-09-27 | 2016-09-27 | Adipic acid purification crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083178.8U CN206103397U (en) | 2016-09-27 | 2016-09-27 | Adipic acid purification crystallization device |
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| Publication Number | Publication Date |
|---|---|
| CN206103397U true CN206103397U (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621083178.8U Active CN206103397U (en) | 2016-09-27 | 2016-09-27 | Adipic acid purification crystallization device |
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| CN (1) | CN206103397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314772A (en) * | 2019-07-10 | 2019-10-11 | 河南神马尼龙化工有限责任公司 | A kind of adipic acid grain size sieving device and the method using its dry adipic acid product quality of progress particle filter raising |
-
2016
- 2016-09-27 CN CN201621083178.8U patent/CN206103397U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314772A (en) * | 2019-07-10 | 2019-10-11 | 河南神马尼龙化工有限责任公司 | A kind of adipic acid grain size sieving device and the method using its dry adipic acid product quality of progress particle filter raising |
| CN110314772B (en) * | 2019-07-10 | 2021-02-26 | 河南神马尼龙化工有限责任公司 | Method for improving quality of dried adipic acid product by utilizing particle size screening |
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